MIS - Meteorology Instrument System

Main Characteristics

	Total mass			415 g
	Power consumption		87.2 mv
	Data capacity			194.6 kbit/day
					1362.2 kbit/seven days

    Temperature Sensor

	Principle of operation		capacitance-type
	Range				1 to 350 K
	Resolution			< 0.1° C
	Accuracy			< 0.5° C

	The sensor is also used for temperature compensation during surface
	measurements of pressure and humidity.

    Pressure Sensor

	Principle of operation		silicon, capacitance-type
	Range				0 to 20 mbar
	Resolution			0.005 mbar
	Accuracy			0.02 mbar

	The sensor is mounted inside the probe on a circular plate.

    Relative Humidity Sensor

	Principle of operation		capacitance-type
	Range				0 to 100 percent
	Resolution			< 1 percent up to 20° C

	The sensor is mounted on the upper end of the boom.

    Optical Depth Sensor

	Principle of operation		comparison of the intensity of the
					direct and scattered sunlight
	Range				0.1 to 0.5 µ m
	Resolution			0.1 percent

	The sensor is mounted on the outside top of the station.

    Ion Anemometer

	Principle of operation		atmosphere ionization by Ni63
					isotopes, ion current detection
	Range				0.3 to 30 m/s
	Resolution			0.2 m/s

	The sensor is mounted at the upper end of the boom.

Descent Phase Instrument (DPI) Three-Component Accelerometer

	Principle of operation		magnetic/electrical with feedback
	Range				± 50 g
	Resolution			> 10-3 g

	The instrument is placed inside the station.

    Absolute Pressure Sensor

	Principle of operation		metal barocase with capacitance-type
	Range				1 X 10-3 to 10 mbar
	Accuracy			1 X 10-3 mbar

	Modes of operation

		1 - height measurement
		2 - as a pressure-sensor for atmospheric measurements on the surface

    Temperature Sensor

	With a platinum wire
		Range			-196 to +500° C
		Resolution		0.1° 

	The sensor is mounted on the boom.

	With a nickel foil
		Range			-196 to +120° C
		Resolution		0.2° 

	The sensor is mounted on the boom.

APX - Alpha-Particle Proton and X-ray Spectrometer


    Measurements of the elemental composition (beginning with carbon) of martian soils


    Recording of secondary neutrons scattered on nuclei of martian soil elements, excitation of X-ray fluorescence of a sample

Main Characteristics

	Energy range
		Alpha-particles		0.6 keV to 6.5 MeV
		Protons			0.6 keV to 6.5 MeV
		X-rays			1 to 22 keV

		Sensor unit		D 52 X 50 mm
		Electronics unit	70 X 100 X 80 mm
		Booms			270 mm

	The sensor unit is mounted on the boom.

OPTIMIZM - Seismometer, Magnetometer and Inclinometer


    The OPTIMIZM instrument consists of a three-component magnetometer with an inclinometer on the boom, a vertical-component seismometer, and an electronics unit (inside the small station).


Main Characteristics

	Resolution				0.25 nT
	Dynamic range				8000 nT
	Measurement frequency
		Three-component measurements	every 30 s
		Measurements of magnetic-field
		variations within		0.01 to 1 Hz


Main Characteristics

	Noise level (period > 20s)		1 nm
	Modes of operation
	     Movement velocity measurement
		Frequency range			0.1 to 10 Hz
		Sensitivity			10-4 m/s
	     Displacement measurement (with feedback)
		Sensitivity			1 nm
		Frequency range			up to 5 X 10-2 Hz
	Dynamic range
		Velocity measurement mode	10-9 to 6.4 X 10-5 m/s
		Displacement measurement mode	1-0.1 to (6.4-0.64) X 104 nm
	Interrogation frequency
		Velocity measurement mode	8 to 1 interrogation/s
		Displacement measurement mode	8 to 1/8 interrogation/s

PanCam - Panoramic Camera


    TV panorama of the martian landscape around the small station.


    Using a 60° lens, an image of a portion of the Martian surface is projected onto a vertical CCD-array (1024 pixels); the optical system is placed at the top of the station and is rotated by a stepper motor (6000 lines).


	Spectral range				0.4 to 0.8 µ m
	Image format				60 X 360° (1024 X 6000 pixels)
	Focal length				10 mm
	Distance				from l m to infinity
	ADC					10 bits, 10 to 40 kHz
	Memory					Mbit after compression
	Minimum time for taking a panorama	0.5 to 1 hour
	Mean time for taking a panorama		1 panorama/10 days
	Power					2 W
	Mean power				0.1 W
	Mass					200 grams

DesCam - Descent Phase Camera


Imaging with a resolution of 20 m to 1 cm during parachute descent.

Main Characteristics

	CCD camera					500 X 400 pixels
	    Optical unit (lenses, CCD, electronics)	50 X 50 X 100 mm
	    Electronics unit (image compression)	130 X 70 X 45 mm
	Mean power 					3.5 mW
	Data capacity					16 MB
	    Optical unit				150 grams
	    Electronics unit				320 grams

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